Means for grinding or polishing rolls



March 4, 1930. Y J. D. WILLIAMS 1,749,457

I MEANS FOR GRINDING QR POLISHING ROLLS Filed Aug.l5, 1924 2 Sheets-Sheet 1 March" 4, 1930. J. D. WILLIAMS MEANS FOR GRINDING OR POLISHING ROLLS Filed Aug.154, 1924 2 Sheetsfiheet 2 all I I. I. I...

V v mm WE N Patented 4, 1930 JOHN D. WILLIAMS, OF NILES, OHIO MEANS FOR GRINDING OR POLISHING ROIJJS Application filed August 15, 1924 Serial No. 732,197.

The present invention relates to grinding or polishing and more articularly to means folr1 grinding or polishing the surfaces of ro s.

An object of the invention is to provide means whereby the surfaces of two cooperating rolls may be simultaneously ground or polished uniformly.

A preferred embodiment of the invention is illustrated in the accompanying drawings in which,

Figure 1 is a view showing the grinding of olishing means in elevation and the rolls and a guiding means for the grinding or polisbing means in section;

- Figure 2 is a plan view, on a larger scale, vof a portion of the grinding or polishing means; Figure 3 is a longitudinal section, on a I larger scale, through a portion of the grind ing means;

Figure-4 is a perspective view of the block for holding the grinding or polishing stones;

'Figure 5 is a rear elevation of the holder for the block, and

.Figure 6 is a front elevation of the cross head.

The grinding or polishing means of the present invention comprises a rest bar 2 an adapted to be supported in a fixed position by the roll housings of a pair of cooperating rolls 3. This rest bar will be positioned adj acent the cusp or bight'of the rolls and will extend parallel to the axes of the rolls.

Supported and guided by the rest bar is a metal bracketel in the form of an angle having a short horizontal flange engaging the upper face of the rest bar and having a vertical leg engaging the front face of the rest 'bar. The vertical leg of the bracket 4 has an annular groove therein in which is welded one end of a fluid pressure cylinder 5 having a hollow piston 6 working therein. Communicating with the cylinder is a pipe 7 for conducting compressed air or other suitable fluid into the cylinder. The supply of pressure fluid is controlled by a valve 8 having an operating handle 9. The supply pipe 7 may be connected with a flexible hose 10 leading to a compressed air tank or other source of pressure fluid supply.

p A cross head 11 is secured to'one end of the piston 6 by means of a bolt 12 extending through an opening inthe cross head and tapped into the end of the piston. Mounted on the cross head is a hard wood block 13 having a recess 14: in one end thereof to receive the head of the bolt 12. This block has a holder 15 mounted upon its outer end. The holder 15 is in the form of a metal plate having a pair of rearwardly' extending inte-' will be noted that the cross head 11 is pro-- Vided with a circular recess 22 receiving the end of the piston 6.

Mounted in the holder 15 and embraced by the flange 18 thereof is a holder 23 for the grinding or polishing stones. The holder 23 is held in the holder 15 by Babbitt metal inserted in the space between the faces of the holder 23 and the flange 18. The holder 23 has oppositely inclined side faces 24 pro vided with dovetail recesses 25. Held in these recesses are the grinding or polishing stones 26, which are preferably of carborundum, although any other suitable grinding or polishing medium may be employed.

Welded to the horizontal flange of the bracket 4 is a stop bar 27 having its outer end provided with .a downwardly extending hook 28 adapted to engage an inclined stop 29 welded to the outer face of the cross head 11 adjacent its upper edge. This stop bar is adapted to limit the outward movement of the piston 6 when pressure fluid is admitted to the cylinder 5 through the pipe 7.

In order to move the grinding or polishing means longitudinally of the restbar 2, the

stop bar 27 has {1.'I'O (l-30 SCCllIG(l thereto. This rod has the end thereof which is secured to the stop bar bifurcated to straddle the pipe 7 and is secured at its other end to said pipe and is provided with a wooden handle 31.

The operation of the device will be ap arent from the foregoing description. hen it is desired to grind or polish the surfaces of a pair of rolls, such as the rolls 3, the rest bar 2 will be positioned adjacent the bight of the rolls and supported in a fixed position on the roll housings. The bracket 4 and at-. tached parts will then be placed on the rest bar in the position shown in Figure 1. When pressure fluid is admitted to the cylinder 5 the piston 6 will move outwardly, thereby scope of the .carrying the grinding or polishing stones 26 into engagement with the surfaces of both rolls and causing such grinding or polishing stones to bear upon the surfaces of the rolls with a uniform ressure, the amount of which may be varied as desired. The operator may then move the grinding or polishing means along the rest bar so as to grind or polish the rolls throughout their length. The advantages. of the' invention arise from the provision of a simple and inexpensive means for applying a uniform grinding or polishing action to the surfaces of a pair of cooperating rolls.

While I have described the invention in connection with the grinding or polishing of rolls it will be understood that its utility is not limited in this respect and it will also be understood that changes may be made in the details of construction without departing from the spirit of the invention or appended claims. I claim: g 1. A grinding and polishing means including a fixed supporting bar, a carrier slidably mounted on the bar, a cylinder on the carrier, a piston in the cylinder, and an abrading element supported on the piston, substantially as described. 7

2. A grinding and polishing means including a fixed-supporting bar, a carrier slidably mounted onthe bar, a cylinder on the carher, a piston in the cylinder, and a head on the piston having oppositely inclined abrasiveb slrfaces thereon, substantially. as descr1 e 3. The combination with a pair of 00- operating rolls, of a guide bar disposed adjacent the bite of said rolls, a carrier mounted for movement along the bar, a cylinder on the carrier, a piston in the cylinder, and

I a transverse head on the piston, said head having oppositely inclined abrasive surfaces thereon,- and means for supplying fluid pressure to, the cylinder, substantially as described.

In testimony whereof I have hereunto set my hand.

JOHN D. WILLIAMS. 

